1) Remove the printer front cover
2) Remove the paper reel from the printer
3) First put the new paper roll on the paper roll and press the paper roll into the guide slot of the printer
4) Cut the front end of the paper into a V-shape, and let the printer enter the printing state. At this time, manually feed the paper head into the paper mouth under the machine head, and the paper will enter the machine head until a certain length is exposed from the front of the machine head
